What is statistical trust? correct answers the assumption that all groups (control/intervention) are all random and thus equal at the beginning of an experiment
How do you have a "clean" experiment? correct answers Making sure that the only difference between the groups is if they received inter...
BBH 310 Exam #3 || very Flawless.
What is statistical trust? correct answers the assumption that all groups (control/intervention) are
all random and thus equal at the beginning of an experiment
How do you have a "clean" experiment? correct answers Making sure that the only difference
between the groups is if they received intervention or not
What is blinding? correct answers intentionally keeping the participants and/or the research
technicians in the dark about who actually got the real intervention
What is attrition? correct answers when people drop out of a study
Why is attrition bad? correct answers if attrition is unequal between control/intervention groups,
the results will be inaccurate
What are true experiments? correct answers An experiment in which the researcher tries to assess
whether an intervention or treatment makes a difference in a measured outcome. The following
elements are present in all true experimental designs: control, random assignment, and
manipulation of the independent variable.
What is a quasi-experiment? correct answers an experiment where there IS manipulation, but NO
random assignment to groups
What are factorial experiments? correct answers experimental designs that manipulate MORE
than 1 experimental factor
What makes a design fully factorial? correct answers when all possible combinations of factors
are used/tested
What are factorial experiments that are not fully factorial? correct answers experiments that
investigate many factors but neglect the combinations
What are strengths of factorial experiments? correct answers - allows you to investigate multiple
hypotheses in one study
- allows you to see if different IVs interact with each other
- efficient in sharing control groups when testing multiple factors
What are weaknesses of factorial experiments? correct answers - if fully factorial, the amount of
combinations could be too large making the experiment impractical
- same for all experiments: attrition, inability to blind participants, and inability to manipulate
some factors
What is a crossover experiment? correct answers an experiment where people who were initially
assigned to one experimental condition are then later switched into another experimental
condition
, What is one caveat with a crossover design? correct answers it will only work if the
manipulations being used don't have very long lasting effects
What is "carry-over?" correct answers When the effects of the prior treatment are seen through
the next observation after switching groups
Strength(s) of crossover experiments. correct answers - allows each person to serve as their own
control
Weakness(es) of crossover experiments. correct answers - carry-over effects (when the
manipulation has long-lasting impacts) can mess things up
- have to do additional studies to see how long interventions last
How do you know if a study is a quasi-experiment? correct answers the researchers will have
manipulated the predictor variable of interest, they don't do so in a randomized and controlled
fashion
What is a pre-post study? correct answers a study with NO control group; the effects of some
manipulation are only tested on one group of people; results are concluded by comparing
measurements from before intervention (baseline) and after.
What is a within-subject design? correct answers effects of intervention are seen in the same
person; form of pre-post study
Strength(s) of pre-post studies. correct answers - EASIEST experimental design to do; simple to
conduct and report
- useful as a "first test" to earn how to deliver an intervention in a study
- can provide definitive results in very extreme cases (ex: if manipulation does something that
would be absolutely impossible without it--> parachute example)
Weakness(es) of pre-post studies. correct answers - changes can occur between pre- and post-
tests; too great a possibility for confounders --> can't use results as conclusive indications of an
effect of the manipulation
Types of changes that can occur between pre- and post-tests. correct answers - maturation or
normal development
- testing effects: learn from prior experiments with those same tests
- events: an impactful event could occur
T or F
Using published info from another source as a control group can make a design quasi-
experimental. correct answers true; they didn't randomly assign the groups since they don't
actually have a control group
T or F
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller FullyFocus. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R210,24. You're not tied to anything after your purchase.